Kittypet

Henry does not formally appear, but Rusty and Smudge mention him when Rusty is about to venture out and explore the forest.

Smudge informs Rusty that Henry went into the forest once, and caught a robin. Rusty responds in disbelief, saying that Henry had never been into the woods before on account of being too lazy to do much after his trip to the vet, and would have nothing to do with birds, as he complains that they disturb his dozing.

Rusty claims that if Henry really did go into the woods, then it was before his trip to the vet when he was neutered, because, since then, he's been lazy and hasn't done much of anything except eat and sleep. Henry had told Smudge stories of the wild warrior cats, depicting them as huge wild cats that eat live rabbits for breakfast and sharpen their claws on old bones. These stories lead to Smudge's fear of forest cats, imagining them as mindless barbarians.